StageScript

local Stages = workspace:WaitForChild("Stages")

for i,Stage in pairs(Stages:GetChildren()) do

    Stage.Touched:Connect(function(touch)

        local humanoid

        if touch.Parent:FindFirstChild("Humanoid") then

            humanoid = touch.Parent.Humanoid
        end

        if touch.Parent and touch.Parent.Parent:FindFirstChild("Humanoid") then

            humanoid = touch.Parent.Parent.Humanoid
        end

        if humanoid then

            local player = game.Players:GetPlayerFromCharacter(humanoid.Parent)

            local PlayerStage = player.leaderstats.Stage.Value

            if tonumber(Stage.Name) == PlayerStage + 1 then

                player.leaderstats.Stage.Value = player.leaderstats.Stage.Value + 1

            elseif tonumber(Stage.Name) > PlayerStage + 1 then

                humanoid.Health = 0
            end
        end
    end)
end